baber/WOPTO huggingface dataset:
Patent DE-3019451-A1 (DE)
Inventor: STAHL PETER DR RER NAT
IPC: G01N33/52
Filed: 1980-05-21
Abstract: The present invention provides a process for the determination of beta -lactamases by the use of 7-cyanoacetylaminocephalosporanic acid and measurement of the colored material thereby formed, wherein ammonium ions are added to the material to be tested, together with phosphate ions and/or an agent splitting off oxygen. The present invention also provides a reagent for the determination of  beta -lactamases based upon 7-cyanoacetylaminocephalosporanic acid, which reagent additionally contains ammonium ions, together with phosphate ions and/or an agent splitting off oxygen.
Patent DE-3020228-A1 (DE)
Title: Gas-fired water heater safety device - automatically shuts off gas burner when down draught or flue blockage is detected
Inventor: VAILLANT KARL-ERNST DIPL ING
IPC: F23N1/00
Filed: 1980-05-24
Abstract: The gas-fired water heater has a flow safety device (3) between the heater (1) and the flue (10) with further outlets (12) at the sides leading to a trap chamber. Two temp. sensors (14,17) at the outlet (9) leading to the flue (10) and at one of the side outlets are coupled to an evaluation circuit (16) comprising the difference between their outputs with a reference value to selectively disconnect the gas supply to the water heater. A third temp. sensor may be positioned at the inlet (8) to the safety flow control (3) from the heater (1). Pref. the evaluation circuit (16) uses a multi-stage binary counter coupled to a comparator providing the difference between the temp. sensor outputs. The heater may comprise a through-flow water heater or a boiler.
Patent DE-3022629-A1 (DE)
Title: Spreader for wood shavings for making chip board panels - has transverse spreading belt with guide strips across direction of movement
IPC: B27N3/14
Filed: 1980-06-18
Abstract: The conveyor is to spread shavings (1) on to a support continuously in making chip board panels. It has a transverse spreading belt (14) with circular movement, similar to a support and having distributors (6) above it. The directing strips are separated and are across movement direction. The directors work with the rotating belt on which the cross strips are formed by rods. The space inside the grille contains the shavings coming from an upper blade and there is also a lower blade (11). The speed of the lower blade is lower than that of the support.
Patent DE-3029732-A1 (DE)
Title: Self-rotating celestial chart with clock drive - uses 24 hour scale rotated in conjunction with star motion to aid astronomical observations
Inventor: MARINI UMBERTO
IPC: G09B27/04
Filed: 1980-08-06
Abstract: The star chart providing a direct indication of the hour angle has a cover plate coupled to the drive marked with a 24 hour scale division and rotated in synchronism with the motion of the stars. The cover plate is surrounded by a base plate also having a 24 hour scale division marked around the circumference of the cover plate. Alternatively, the base plate is rotated in synchronism with the movement of the stars. The star chart is used when setting up an astronomical telescope, by providing a direct read-out of the hour angle of the required star at any point during the night.
Patent DE-3031178-A1 (DE)
Title: Endless conveyor with chain suspended goods carriers - which consist of segment shells, held at delivery point, to which they are carried by controllable drive
Inventor: SCHNEIDER HORST
IPC: B65G1/127
Filed: 1980-08-18
Abstract: The mechanism is intended for presenting items, e.g. paper rolls, at a delivery point. The rolls are held in carriers swivelably suspended at either end between two endless chains which run around chain wheels under controlled drive. The carriers have a segment-shaped cross-section and sector-shaped sides. Each carrier is provided with an eye, or the like, capable of being engaged by a corresponding bolt, e.g. on a hinged panel, at the delivery point to securely locate the carrier. The control unit may have push-buttons to bring individual carriers to the delivery point.
Patent DE-3031210-A1 (DE)
Title: Sail board or boat rig with sail stretching plus wishbone control-boom - has down curved end control boom linked to mast, stretching boom
Inventor: MOHR DETLEF
IPC: B63B35/79
Filed: 1980-08-19
Abstract: The rig for a sailboat or sailboard basically comprises a sail (2) fixed to a mast(1) and a boom(4), plus a wishbone-boom(3) for control. The rig and hull are connected only by a universal coupling at the mast foot(5). The control-boom is secured to both mast(1) and stretching-boom (4); its ends may be curved downwards towards the securing points. Reefing facilities are provided. The stretching-boom may be a flexible batten inside a pocket along the sail foot. The mast foot coupling may be freely movable forwards and backwards.
Patent DE-3032131-A1 (DE)
Title: Di:chromate removal from chlorate soln. - by redn. with hydroxylamine hydrochloride and pptn. as chromium hydroxide to avoid toxic gas and filtration problems
Inventor: MAYCOCK KENNETH RAYMOND
IPC: C01B11/14
Filed: 1980-08-26
Abstract: Removal of dichromate (I) from chlorate solns. (II) involves redn of the Cr-VI of (I) to Cr-III with a chemical reducing agent (III) and sepn of the Cr-III in the form of a Cr hydroxide ppte. The novel feature is that hydroxylamine. HCl is used as (III) in a concn of min 4 mole/mole (I) at min 40 deg C and at a pH of over 7(8). Pref (II) is a soln of NaC103 and CaCl obtd by electrolysis of NaCl soln. The Cr hydroxide is oxidised with a conc. (min 2 g/l)NaOCl soln and the (I) obtd is returned to the NaCl soln for (II) prodn. This method avoids the evolution of toxic gases (occurring on redn with Zn(HS)2)and the need for a sepecial filtration stage.
Patent DE-3033275-A1 (DE)
Title: Elastic pressure diaphragm esp. of rubber - has external textile facing to protect against damage
Inventor: DOKOUPIL JIRI DIPL ING
IPC: F16J3/00
Filed: 1980-09-04
Abstract: An elastic pressure diaphragm is composed of a thin-walled, elastic foil impermeable to air and having the general form of a flat bag; this is encased in one or more layers of elastic, woven or knitted textile. More specifically, the thin walled elastic foil is produced by the rubber dipping process. This external textile layer provides great protection for the rubber foil from friction and consequent damage. The rubber foil itself may be made by dipping a mould, typically of aluminium, into liquid rubber to produce the hollow diaphragm, after which one or more layers of textile are fitted to it.
Patent DE-3035695-A1 (DE)
Title: Automatic level control and peak valve indicator - has integrated circuit to provide overload prevention and to maintain correct operating levels
Inventor: ANDRIANOV VITALIJ VASILEVIC
IPC: H03G3/30
Filed: 1980-09-22
Abstract: A stereo magnetic tape recording system has a regulating circuit to indicate peak values to avoid overload and provides automatic control of the recording level.S The system has two identical channels (1,2) that are coupled to a common reference voltage source (3). Both channels are also coupled to a circuit (4) that generates signals for the automatic regulation system. The circuit contains a pair of input transistors (5,6) and an output transistor (9). Each channel has difference and reference transistors (10,11) together with a threshold value transistor (12).
Patent DE-3040627-A1 (DE)
Title: Control knob for heater thermostat - has calibration disc with ratchet mechanism to secure calibration setting
Inventor: SEIFFERT GUENTHER
IPC: G05D23/02
Filed: 1980-10-29
Abstract: In order to prevent the calibration of the thermostat from being disturbed accidentally, the calibration disc of this assembly requires considerably greater force for adjustment than the control knob itself. This is achieved by fitting springs which engage with teeth inside the front end of the hollow control knob. The calibration disc (5) fits inside the front end of the control knob (3). Ridges (10) on springs (9) fitted just inside the perimeter of the disc engage with teeth (7) near the front end of the knob. A coin in a slot (11) assists in rotating the disc.
Patent DE-3041973-A1 (DE)
Title: Prodn. of cement linings in pipes by centrifugal method - using cement reinforced with mineral fibres
Inventor: SCHWENK WILHELM DIPL CHEM DR
IPC: C04B28/02
Filed: 1980-11-04
Abstract: In the prodn. by the centrifugal rotation process of highly compressed cement linings in metal pipes, for protection against corrosion by water, the cement mixt. is reinforced with mineral fibres. The fibrous material is pref. resistant to attack by alkali, e.g. glass rich in silicate or contg. Zr oxide. The amt. is 1-5wt.%. The cement may contain a thinner, e.g. a melamine condensate resin, to improve the geometric alignment of the reinforcement. The chemical resistance of the cement may be improved by addn. of a dispersion of an alkali-resistant synthetic, e.g. an acrylic resin; the amt. of the synthetic is 3-30%. Distribution of the synthetic may be improved by addn. of 5-30% of a surfactant filler, esp. flue dust from a high temp. Fe refinery, obtd. at 1600-1700 deg.C, contg. about 90% glass, and having a pozzolanic effect of 115%. The linings are resistant to mechanical flexing, e.g. the flexural tensile resistance parallel to the pipe surface is of the order of 30 N/square mm.
Patent DE-3043225-A1 (DE)
Title: Roll gap adjustment in rolling mill - where roll journals are located in eccentric holes in bushes rotated by worm gears
Inventor: HENNIG HORST DIPL ING
IPC: B21B31/26
Filed: 1980-11-15
Abstract: Two work rolls are each eccentrically located in a bush, so that when the two bushes are rotated the gap between the rolls is altered. Each bush is provided with worm teeth meshing with a driving worm. The roll stand provides a side opening between the two worms. In an opening is a drive gear which uses two coaxial shafts to rotate the worms; the shafts are located in holes in the hollow worms. The advantage is that time is saved in adjusting the roll gap and in assembling or dismantling the mill.
Patent DE-3044327-A1 (DE)
Title: Circuit breaker operating mechanism with close and trip springs - uses tension adjuster for matching closing spring to a range of switches
Inventor: DEHARDE HORST
IPC: H01H3/30
Filed: 1980-11-25
Abstract: The principal objective is to have springs which will suit a range of circuit breakers. A further aim is to simplify the trip arrangement. The closing spring is enclosed in a cylinder. One end of the spring is attached to a lever connected to the operating spindle. The other end hooks through an eyebolt whose free end passes through a fixed plate. A nut on the end of the bolt provides the means for adjusting the spring tension. The trip spring acts on a lever attached to the spindle. In the closed state a linkage acts as a latch to block tripping. To trip the spindle is turned slightly counter-clockwise. A pin on the linkage lifts allowing a follower to turn and release the lock.
Patent DE-3108301-A1 (DE)
Title: Noise-damped machine frame
Inventor: HENNING WOLFGANG
IPC: G10K11/16
Filed: 1981-03-05
Abstract: To reduce the internal noise level and the noise radiation of outer walls excited into structure-borne noise, a machine frame is designed as a fluid-tight container with closable inlet and outlet openings for a damping fluid.
Patent DE-3112980-A1 (DE)
Title: Toothbrush with two parallel cleaning elements rotating in opposite directions
Inventor: MARCHETTI PIETRO ANGELO
IPC: A61C17/26
Filed: 1981-04-01
Abstract: Published without abstract.
Patent DE-3117715-A1 (DE)
Title: Device for spray-coating articles with powder
Inventor: MENDLER HANS
IPC: B05B7/14
Filed: 1981-05-05
Abstract: The device for spray-coating articles with powder possesses a spray head in which a plurality of nozzle-like outlet openings are provided in the direction of its longitudinal extent. The outlet openings are fed with a powder/air mixture via an individual duct in each case, the flow rate in each individual duct being infinitely variable. The transition from one main section of each individual duct to the outlet opening is arcuate and therefore rebound-free for the conveying of the powder/air mixture. Further nozzles generate a gas curtain behind the spray head which drives the particles passing into it on to the surface being coated and prevents powder particles from being entrained and whirled beyond the coating region by rapidly moving articles.
Patent DE-3120468-A1 (DE)
Title: Camera stand
Inventor: FRANKEL ROBERT S
IPC: G03B17/56
Filed: 1981-05-22
Abstract: Camera stand consisting of two equal bipedal supports (12, 14), which can be mounted on a camera housing (40) and form together with the housing a stable four-point support system. The camera housing is accommodated betwen two arms (18 and 20) of each support. One of the arms (20) has an elastic section (26) for pressing the camera housing against the other arm (18). Each support is assigned two individually adjustable screw-in legs (32, 34) which permit the camera to be held in an inclined position by being screwed in to different extents. <IMAGE>
Patent DE-3121619-A1 (DE)
Title: Switching valve, especially 3/2-way valve
Inventor: SCHMIERER HEINZ DIPL ING
IPC: F16K23/00
Filed: 1981-05-30
Abstract: What is described is a switching valve, especially a 3/2-way valve, which serves especially for switching on and off part regions of a spray boom, such as can be mounted on discharge appliances on agricultural vehicles. The new switching valve makes it possible to ensure that switched-off part regions of a spray boom no longer drip, even when leaks occur in the valve. This is achieved in that a vacuum is generated in an outlet channel leading to the part regions of the spray boom, in that the liquid fed to a return channel generates, in the region of a suction nozzle in the return channel, a vacuum which is transmitted to the outlet channel by way of a connecting channel. Liquid is thereby sucked out of the outlet channel into the return channel from the switched-off valve, so that dripping can be effectively prevented. The throughflow speed of the liquid to the return channel is variably adjustable by means of a throttle needle which projects into the region of the narrowest cross-section of the return channel.
Patent DE-3122011-A1 (DE)
Inventor: SKACH KUNO DIPL ING
IPC: B60T17/22
Filed: 1981-06-03
Abstract: 1. Indicating device for fluid-controlled vehicle brakes, for indicating their state of application, especially for disc brakes in rail vehicles, comprising at least one switching device with fluid control by a signal pressure (P) corresponding to the braking pressure of the vehicle brakes, the said switching device serving to monitor at least two different visual signs (19) and being capable of movement with rising signal pressure (P) to two basic positions (A; C) and to a specially indicated intermediate position (B) between the two basic positions, and the intermediate position (B) being capable of adjustment by means of a signal pressure (P) which is within a signal pressure range between the signal pressures (P) corresponding to the two basic positions (A; C), wherein, at the first basic position (A) at low signal pressure (P), a visual sign (19) is actuated for the release position of the vehicle brakes and, at the intermediate position (B), the special indicator is actuated as a visual sign of an indifferent braking condition in which the vehicle brakes can be neither released nor applied.
Patent DE-3122361-A1 (DE)
Inventor: KESS HELMAR DIPL ING
IPC: F04C29/02
Filed: 1981-06-05
Abstract: 1. Valve block, which is flangeable to the housing of a screw compressor, for the control of the oil supply with a respective bore disposed in the connecting flange (1) for the oil entry (2) and for the oil exit (3), which bores communicate with corresponding bores in the housing of the screw compressor, with a channel for the oil conduction and extending between the bore for the oil entry (2) and the bore for the oil exit (3), with a shut-off slide valve (11), which is arranged in the path of the channel in a valve bore of the valve block and which is loadable by control air through at least one further channel (4), which extends in the valve block and likewise opens in the connecting flange (1), and with a further flange (7), which possesses a respective outlet and inlet opening interrupting the channel for the oil conduction and onto which an oil filter (8) is placeable, characterised by the combination of the following features : the channel for the oil conduction extends by way of a dirt collector (5) arranged in the valve block, a thermostatically actuable three-way slide valve (6), which according to temperature conducts the channel further either by way of the one path (=>) or the other path (->), is arranged in the course of the channel in a further valve bore (18), the one path (=>) leads directly to the shut-off slide valve (11) and, in the case of the open setting of the same, to the bore (3) for the oil exit, the other path (->) leads to an outer connection (9), with which a further outer connection (10) for the re-entry is associated, wherein an oil cooler is connectable between both these connections, a connecting bore (12) for a differential pressure measuring device (13) is disposed in the valve block and connected through a first measuring channel (14) with the channel leading to the outlet opening (26) for the oil filter (8) and through a second measuring channel (15) with the channel leading to the inlet opening (28) from the oil filter (8).
Patent DE-3127833-A1 (DE)
Title: Window, keyword: cam-controlled holding member
Inventor: VOSSKOETTER ALFRED
IPC: E05D15/52
Filed: 1981-07-14
Abstract: In a window according to the main patent, it is proposed that there be mounted on a part of the espagnolette means a shift slot which receives a slot follower of the first holding member and which shifts it to and fro between the holding position and the position of rest. <IMAGE>
Patent DE-3132366-A1 (DE)
Title: Mechanical seal
Inventor: KLETT GERHARD
IPC: F16J15/34
Filed: 1981-08-17
Abstract: The invention relates to a mechanical seal (axial face seal) with a sleeve having an internal collar and with a mating slip ring which, to allow it to be fixed in the sleeve, has an eccentric outer web which interacts with an eccentric internal step on the sleeve so as to inhibit rotation.
Patent DE-3136816-A1 (DE)
Title: Digitally adjustable voltage generator
Inventor: SCHROEDER HEINRICH DIPL ING
IPC: G01R17/04
Filed: 1981-09-16
Abstract: A digitally adjustable voltage generator for the reproducible subdivision of a voltage value with minimum errors, in which a Wheatstone bridge circuit fed by a constant voltage exhibits a resistor which can be connected in parallel with one of the half-branches of the bridge via a switch. The switch is periodically controlled by a time divider pulse sequence, the duty ratio of which corresponds to the ratio of a time required for reaching a set number compared with the time required for the full count in a counter which is acted upon by a clock pulse sequence. The invention is used as load cell phantom in the testing of electronic weighing devices for electromechanical scales. <IMAGE>
Patent DE-3142137-A1 (DE)
Title: Antilock device
Inventor: WIDMER MAX
IPC: B60T8/42
Filed: 1981-10-23
Abstract: In an antilock device in which the main brake line is shut off when there is a risk of locking and the brake fluid is fed back by means of a pump from the wheel brake cylinder into that part of the main brake line on the main brake cylinder side by way of an auxiliary line, the auxiliary line containing a piston pump is connected directly by way of two non-return valves to the main parts of the main brake line or those on the wheel brake cylinder side. In this way fewer components are used for the same function compared to the prior art and friction-free passage of the brake fluid through the main brake line is ensured in normal braking.
Patent DE-3142851-A1 (DE)
Title: Additive control for internal combustion engines
Inventor: SCHUMANN GERHARD
IPC: F02D23/00
Filed: 1981-10-29
Abstract: Device for the easy, metered feeding of an additive into the compressor intake line of a supercharged internal combustion engine. The metering is performed as a function of the engine flow rate by the partial vacuum obtaining in the compressor intake line. In this way the power output and efficiency of supercharged engines can be increased by simple means. In the case of the exemplary embodiment shown in the drawing, water which is extracted from the exhaust gas flow of the internal combustion engine serves as additive. <IMAGE>
Patent DE-3144243-A1 (DE)
Title: Oscillator
Inventor: ENGLMEIER MARTIN DIPL ING
IPC: H03J5/24
Filed: 1981-11-07
Abstract: In an oscillator having a resonant circuit of an inductance (1, 2) and a series circuit, connected in parallel therewith, of a fixed capacitor (5) and a controllable capacitance diode (4), a switching diode arrangement for switching the frequency range of the resonant circuit is provided. The switching diode arrangement is switched via two separate supply lines. To achieve good tracking characteristics in both tuning ranges, particularly in the case of increased tuning variation of the oscillator frequency, and to be able to carry out the switching of the tuning range by simple measures, a further capacitance diode (6) in series with a switching diode (19) is connected in parallel with the fixed capacitor (5) with respect to radio frequency. In addition, the first switching diode (19) is connected in series with a second switching diode (23) which, connected in series with a coil (24), can be connected in parallel with at least a part (2) of the inductance (1, 2) with respect to radio frequency. This provides for a capacitance variation in the resonant circuit which benefits tracking in the higher-frequency range. <IMAGE>
Patent DE-3144865-A1 (DE)
Title: Flat-bed screen printing machine
Inventor: GETZSCHMANN HANS-JOACHIM
IPC: B41F15/08
Filed: 1981-11-11
Abstract: The screen printing machine (10) has on the base frame (11) longitudinal guide rods (17.1, 17.2), on which the table (20) is displaceable in the direction of advance (36). A wheel and disc drive (30) is provided for advancing the table. The table has a downwardly projecting friction limb (31) which extends in the direction of advance and against whose friction surface (31.2) presses a sprung support wheel (37). The pole-changing motor is switched by the limit switch (54). Magnets (23) which are set back slightly relative to the buffer heads (22.4) of the end position dampers (22) hold the table (20) fixed in the printing position until the end of the printing operation. <IMAGE>
Patent DE-3147062-A1 (DE)
Title: Solenoid valve
Inventor: STAIGER BRUNO
IPC: F16K31/06
Filed: 1981-11-27
Abstract: In this solenoid valve, a magnet head is provided which has a movable armature. Ball bearings are allocated to the armature in order to guide the movement such that it moves easily and has no play.
Patent DE-3149992-A1 (DE)
Title: Switched-mode power supply
Inventor: STUEDEMANN BERND ING GRAD
IPC: H02M3/338
Filed: 1981-12-17
Abstract: A switched-mode power supply is described which comprises a switching stage, a transformer and a control loop with an associated sensing winding on the core of the transformer. Several loads are connected on a secondary side of the transformer. The reaction of load steps in individual load circuits can be reduced by a feedback section inserted into the control loop.
Patent DE-3150420-A1 (DE)
Title: Process for forming a thin phosphorus layer on silicon substrates by evaporating H3PO4
Inventor: KOVAL TIMOTHY D
IPC: H01L21/316
Filed: 1981-12-19
Abstract: Process for forming a phosphorus dopant on an oblate piece of silicon for the purpose of subsequently forming a p-n boundary layer by evaporating phosphoric acid at atmospheric pressure to form an essentially continuous film and then heating the film to form a phosphorus/silicon glass coating which does not impair a deposited antireflection layer.